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<div class="titlepage"><div><div><h4 class="title">
<a name="asio.reference.read_until.overload4"></a><a class="link" href="overload4.html" title="read_until (4 of 16 overloads)">read_until (4
        of 16 overloads)</a>
</h4></div></div></div>
<p>
          Read data into a dynamic buffer sequence until it contains a specified
          delimiter.
        </p>
<pre class="programlisting">template&lt;
    typename <a class="link" href="../SyncReadStream.html" title="Buffer-oriented synchronous read stream requirements">SyncReadStream</a>,
    typename <a class="link" href="../DynamicBuffer.html" title="Dynamic buffer requirements">DynamicBuffer</a>&gt;
std::size_t read_until(
    SyncReadStream &amp; s,
    DynamicBuffer &amp;&amp; buffers,
    string_view delim,
    asio::error_code &amp; ec);
</pre>
<p>
          This function is used to read data into the specified dynamic buffer sequence
          until the dynamic buffer sequence's get area contains the specified delimiter.
          The call will block until one of the following conditions is true:
        </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              The get area of the dynamic buffer sequence contains the specified
              delimiter.
            </li>
<li class="listitem">
              An error occurred.
            </li>
</ul></div>
<p>
          This operation is implemented in terms of zero or more calls to the stream's
          read_some function. If the dynamic buffer sequence's get area already contains
          the delimiter, the function returns immediately.
        </p>
<h6>
<a name="asio.reference.read_until.overload4.h0"></a>
          <span><a name="asio.reference.read_until.overload4.parameters"></a></span><a class="link" href="overload4.html#asio.reference.read_until.overload4.parameters">Parameters</a>
        </h6>
<div class="variablelist">
<p class="title"><b></b></p>
<dl>
<dt><span class="term">s</span></dt>
<dd><p>
                The stream from which the data is to be read. The type must support
                the SyncReadStream concept.
              </p></dd>
<dt><span class="term">buffers</span></dt>
<dd><p>
                The dynamic buffer sequence into which the data will be read.
              </p></dd>
<dt><span class="term">delim</span></dt>
<dd><p>
                The delimiter string.
              </p></dd>
<dt><span class="term">ec</span></dt>
<dd><p>
                Set to indicate what error occurred, if any.
              </p></dd>
</dl>
</div>
<h6>
<a name="asio.reference.read_until.overload4.h1"></a>
          <span><a name="asio.reference.read_until.overload4.return_value"></a></span><a class="link" href="overload4.html#asio.reference.read_until.overload4.return_value">Return
          Value</a>
        </h6>
<p>
          The number of bytes in the dynamic buffer sequence's get area up to and
          including the delimiter. Returns 0 if an error occurred.
        </p>
<h6>
<a name="asio.reference.read_until.overload4.h2"></a>
          <span><a name="asio.reference.read_until.overload4.remarks"></a></span><a class="link" href="overload4.html#asio.reference.read_until.overload4.remarks">Remarks</a>
        </h6>
<p>
          After a successful read_until operation, the dynamic buffer sequence may
          contain additional data beyond the delimiter. An application will typically
          leave that data in the dynamic buffer sequence for a subsequent read_until
          operation to examine.
        </p>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2018 Christopher M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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